class_docstr: A MultiObjectiveFunction class used to hold multi-objective functions.
docstr: Function's instances.
docstr_tok: ["Function","'s","instances","."]
code: def functions(self) -> List[callable]:
      """Function's instances."""
  
      return self._functions
  
file_path: opytimizer/opytimizer/functions/multi_objective/standard.py
imports: from typing import List
  import numpy
  import opytimizer.utils.exception
  from opytimizer.core import Function
  from opytimizer.utils import logging
label_desc: Use image node_id 3 for calling the MultiObjectiveFunction obj's underlying member method code with example usage: obj.functions() and returns: self